Frozen string fix, updated deps, ruby deprecation

- Fix issue when using --enable-frozen-string-literal Ruby option #95
  (jeremyevans)
- Update gems (rake, addressable)
  - Updated gems removes support for Ruby <2.5. Seeing as 2.3 is now
    longer getting security patches, this seems like a non-issue

CHANGELOG.md

@@ -1,5 +1,11 @@
 ### Changelog
 
+### 5.1.1
+
+- Fix issue when using --enable-frozen-string-literal Ruby option #95 (jeremyevans)
+- Update gems (rake, addressable)
+  - Updated gems removes support for Ruby <2.5. Seeing as 2.3 is now longer getting security patches, this seems like a non-issue
+
 ### 5.1.0
 
 - Create `random_base32` to perform `random` to avoid breaking changes

lib/rotp/version.rb

@@ -1,3 +1,3 @@
 module ROTP
-  VERSION = '5.1.0'.freeze
+  VERSION = '5.1.1'.freeze
 end

rotp.gemspec

@@ -4,6 +4,7 @@ Gem::Specification.new do |s|
   s.name        = 'rotp'
   s.version     = ROTP::VERSION
   s.platform    = Gem::Platform::RUBY
+  s.required_ruby_version = '~> 2.5'
   s.license     = 'MIT'
   s.authors     = ['Mark Percival']
   s.email       = ['mark@markpercival.us']
@@ -16,9 +17,9 @@ Gem::Specification.new do |s|
   s.executables   = `git ls-files -- bin/*`.split("\n").map { |f| File.basename(f) }
   s.require_paths = ['lib']
 
-  s.add_runtime_dependency 'addressable', '~> 2.5'
+  s.add_runtime_dependency 'addressable', '~> 2.7'
 
-  s.add_development_dependency 'rake', '~> 10.5'
+  s.add_development_dependency "rake", "~> 13.0"
   s.add_development_dependency 'rspec', '~> 3.5'
   s.add_development_dependency 'simplecov', '~> 0.12'
   s.add_development_dependency 'timecop', '~> 0.8'